Check-valve



2 Sheets-Sheen I (N0 Model.)

H. BURNS. GHBGK VALVE.

No. 55s

Patented Jan. 2l,

gnuuurem 'I Il (N6 Model.)` 2l sheets-#sheet 2.

H. BURNS. GHEGK VALVE.

No. 553,390. Patented Jan. 2.1, 1896 UNITED STATES PATENT OFFICE.

HENRY BURNS, OF CHARLEVOIX, l\'[I.CIlIGAN.

CHECK- VALVE.

SPECIFICATION forming part of Letters Patent No. 553,390, dated January21, 1896. Application tiled April 28, 1894.` gSerial No. 509,328. (Nomodel.) i

To all whom, it 11i/ay concern:

Be it known that I, HENRY BURNS, a citizen of the United States,residing at Charlevoix, in the county of 4Charlevoix and State ofMichigan, have invented a new and useful Check-Valve, of which thefollowing is a specification. V

This invention relates to that class of checkvalves which embody a shellor casing having an angular dividing-partition in which is formed thevalve-seat, the valve being guided in its operation by a projecting stemworking in the cap-piece or other part of the casin g.

The object of my improvements is to provide a simple and inexpensivevalve in which certain parts subject to wear may be readily andconveniently removed and others substituted, in which the size of theport of the valveseat maybe readily regulated, which is especiallyadapted by its construction and arrangement to be entirely formed ofmetal, and which will furthermore possess advantages in point ofeffective operation, adj ustability, the substitution of parts,convenience', durability, and general efiieiency.

To these ends my invention consists in certain improvements in theconstruction and ar rangement of parts, substantially as hereinafterfully described, and particularly pointed out in the claims.

In the drawings, Figure l is a perspective view of a check-valveembodying my improvements, parts being broken away to show the interiorconstruction. Fig. 2 is a vertical longitudinal sectional View. Fig. 3is a vertical transverse sectional view. Fig. 4t is a horizontalsectional view taken on the line :r lr, Fig. 2. Fig. 5 is a detailperspective view of the removable collar forming the valve-seat. Fig. 6is a detail perspective view of the valve proper. Fig. 7 is a detailperspective view showing parts of the valve detached.

Corresponding parts in all the figures are denoted by the same lettersof reference.

Referring to the drawings, A designates the shell or casing, which maybein the main of ordinary construction, having the angular dividingpartition A forming the inlet and outlet chambers a and a,respectively, with the respective inlet and outlet ports a2 and a3. Inthe horizontal central portion of the partition A is formed thevalve-port A2.

The walls of the port or opening A2 are threaded, as shown at a4, thisthreaded opening being adapted to receive a removable annular ring orcollar B, forming the valve-seat. This ring or collar is provided with acircumferential flange b at its top, forming a shoulder b', below whichlatter the periphery of the ring is threaded, as shown at b2. Thethreaded portion of the ring is received within the threaded openingA2,with the shoulder 19 resting upon the partition A', so that theflange b forms a raised valve-seat, the top edge of the ring beingpreferably flat, as shown at b3. The ring is provided withinteriorly-projecting lugs B B' adapted to be engaged by a suitable toolin setting or removing the ring, these lugs in the present instanceprojecting from the bottom about half-way up the wall of the ring toleave space for the accommodation of the guide-plate hereinafterdescribed. I prefer to construct this removable ring of brass. The ringprovides an effective valve-seat which may be readily removed when wornand another substituted, thus avoiding the substitution of an entirelynew valve. The size of the valve-port may also be regulated as desiredby employing different rings or collars of adapted thickness withoutchanging the casing or shell.

C designates the valve proper, which comprises a cup or body portion c,adapted to iit over the raised valve-seat, and a projecting stem C'. Iprefer to constructthis piece of brass. lIn the cupc is set a disk orplate D, forming the washer and preferably constru cted of white metalor brass. VThis washer rests upon the projecting top edge Z13 of theremovable ring forming the valve-seat when the valve is closed.

E designates a guide-plate, which is preferably formed of brass andprojects from the bottom of the valve proper, said guide-platecomprising a disk or body portion c, adapted to be received within thering B and provided with downwardly-projecting studs e', which slidewithin the ring and serve to guide the valve. The washer D andguide-pieceE are secured in relative position and to the valve-piece Cby means of a bolt or screw F, passing through an opening d in thewasher and an opening e2 in the guide-plate, the parts being held inposition with the guideplate IOO up against the washer by a nut G on theend of said screw. The stem c of the valve is hollowed out or recessed,as shown at c2, for the accommodation of the head of the screw or bolt,and in the bottom of said recess is provided an opening c3 for thepassage of said screw. The parts subject to wear and carried by thevalve proper are thus readily separable for purposes of substitution,and the diameter or size of the guide-plate E is adjusted to thediameter of the valve-port in the removable seat-ring B, which maybeem.- ployed.

The cap-piece H is adapted to screw over the corresponding open top ofthe shell or casing A, these parts being relatively threaded, as shownat hand a5, and interiorly in the capepiece is provided a vertical guidechannel or recess h corresponding to and adapted to receive thevalve-stem c'.

- The operation and advantages of my invention will be readilyunderstood by those skilled in the art to which it appertains. By reasonof the improved construction and arrangement of parts, as abovedescribed and illustrated, the valve-seat and wearing parts of the valvemay be readily removed and adjusted and substitution effected, and thesize of the valve-port may be conveniently and inexpensively regulatedwith relation to the same casing or general parts. I prefer to constructthe casing and cap-piece of brass or iron, and it will thus be notedthat the entire valve is adapted to be formed of metal.

It will be understood that the removable ring or collar forming thevalve-seat and the general features of construction and arrangement ofthe Washer and parts of the valve proper are adapted for effectiveemployment in valves of other general structure and arrangement as wellas for check-valves.

Having thus described my invention, I claim and desire to secure byLetters Patentl. An improved check-valve, comprising the cup-shaped bodyportion, C, the iiat disk or washer plate, D, corresponding to the interior of said cup and set therein, the guideplate embodying a disk orbody portion resting against the bottom face of the washer disk andprovided with the downwardly-proj ecting studs e', and the bolt passingthrough the cup and the body of the guide-plate and binding the washerdisk in position between the bottom face of the cup and the guidepla-te,whereby the annular edge of the cup is adapted to inclose the valve-seat and the flat bottom face of the washer rests upon said seat,substantially as set forth.

2. An improved check-valve, comprising the clip-shaped body portion, C,and the projecting hollowed or recessed stem, the flat disk or washe-r,D., corresponding to the interior of the cup and set within the sameagainst the bottom face of the latter, the guideplate, E, embodying adisk or body portion resting against the bottom face of the washer diskD and provided with the downwardlyextending studs c', and the securingscrew or bolt set within the hollowed stemv and proj ecting downwardlythrough the cup and washer disk and body of the guide-plate and bindingthe washer disk between the bottom face of the cup and the guide-plate,whereby the annular edge of the cup is adapted to in close'the valveseat and the flat bottom face of the washer is adapted to rest upon saidseat, substantially as set forth.

3. An improved check-valve, comprising the casing'provided with apartition having the opening forming the valve port, and the removablering or collar secured in said opening and provided at its top with theprojecting flange l) having the approximately flat or straight top edgeb3, in combination with the cup-shaped valve, C, having the flat disk orwasher, D, corresponding to the interior of the cup and set up withinthe same, and the guide-plate, E, embodying the disk or body portionseated against the washer disk and the downwardly-projecting studs d,the outer annular edge of the cup being adapted to inclose the flange Z)with the flat bottom face of the washer resting upon the top edge b3 andthe guide-plate and its projecting studs being received by the valveseat ring, substantially as set forth.

4. An improved check-valve, comprising the casing having the partitionin which is provided the opening forming the valve port, the removablering or collar secured in said opening and having at its top theprojecting flange b provided with the top edge b3, the valve embodyingthe cup-shaped body portion and the hollowed or recessed stem andcarrying the flat disk or washer, D, corresponding to the interior ofthe cup and set up within the same, the guide-plate, E, having the diskor body portion seated against the bottom face of the washer and thedownwardly-extending studs e', and the bolt set in the hollowed stem andpassing downwardly through the cup and the washer and the body of theguide-plate and binding the washer disk between the bottom face of thecup and the guide-plate, the outer annular edge of the cup being adaptedto inclose the iiangeb with the bottom face of the washer interiorlyresting upon the edge b3, substantially as set forth.

5. An improved check-valve ofthe class de scribed, comprising the casinghaving the partition in which is provided the opening forming the valveport, the ring or collar set in said opening and provided at its topwith the projecting iiange b and having the interior projecting lugs Bextending a part of the way up the wall of the ring, the cup-shapedvalve carrying the disk or washer corresponding to the interior of thecup and set up within the same and adapted to rest upon the top edge ofthe flange b, and the guide-plate embodying the disk or body portion setwithin the cup against the bottom face of the washer and IOO IIO

provided with the downwardly-extending studs e received by the valveseat ring, the outer annular edge of the cup being adapted to inclosethe flange b while the disk or body portion of the guide-plate isreceived within the valve seat ring above the lugs B', substantially asand for the purpose set forth.

6. The herein-described improved checkvalve, comprising the casinghaving the partition in which is provided the opening forming the valveport, the removable ring or collar secured in said opening and providedat its top with the projecting iiange b having the approximately ilattop edge band the interior lugs B extending a part of the way up thewall of the ring, the valve embodying the cupshaped body portion and therecessed o r hollowed stem, the lat disk or washer D corresponding tothe interior of the cup and set up within the same, the guide-plate Ehaving the disk or body portion set Within the cup against the bottomface of the washer and provided with downwardly-extending studs epassing through the valve seat ring, and the bolt set in the recessedstem and passing downwardly through the cup and the washer and the bodyportion of the guide-plate, the outer annular edge of the cup beingadapted to inclose the iiange b with the body portion of the guideplatereceived within the valve seat ring above the lugs B and the at bottomface of the washer D interiorly resting upon the top edge b3,substantially as set forth.

7 An improved valve of the class described, embodying the casingprovided with the opening forming the valve port, and a removable ringor collar secured in said opening and provided at its top with theprojecting flange b, in combination with a cup-shaped valve carrying thedisk or washer set up within the cup with its outer edge abuttingagainst the outer annular edge of the cup, and guide devices set withinthe cup against the bottoni face of the washer, the relativeconstruction being such that the annular edge of the cup incloses theflange b between it and the guide devices and the intervening bottomface of the washer interiorly rests upon the top of the ange b,substantially as set forth.

In testimony whereof I a'ix my signature in presence of two witnesses.

HENRY BURNS. lVitnesses H. S. HARSHA, JOSEPH STEVENS.

